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Most commercial antifreezes are formulated for gasoline engine applications and will, therefore, have high silicate content. ASTM D4985 antifreeze is a low silicate antifreeze and should be used if not using Caterpillar Antifreeze. The percentage of antifreeze and water should be determined by the amount of freeze protection required. Follow the instructions provided by the antifreeze supplier.When using any antifreeze (except Caterpillar Antifreeze) supplemental coolant additive is required at initial fill. Caterpillar or other manufacturer's products can be used as the supplemental coolant additive.Add 1 liter (1 U.S. quart) of liquid supplemental coolant additive for every 15 liter (4 U.S. gallon) so that the cooling system will have a three to six percent concentration of supplemental coolant additive.DO NOT mix Caterpillar Supplemental Coolant Additive (Conditioner) or supplemental coolant additive elements with the other products available; select a cooling system treatment and use it exclusively. If other than Caterpillar products are used as the supplemental coolant additive, follow the manufacturers' recommendation for cooling system treatment and test evaluation.Supplemental Coolant Additive (Conditioner or Inhibitor)
Never use coolant in Caterpillar engines without supplemental coolant additive regardless of antifreeze concentration.Caterpillar or other manufacturer's products can be used as the supplemental coolant additive. DO NOT mix Caterpillar Supplemental Coolant Additive (Conditioner) liquid or elements with the other commercial products available; select a cooling system treatment and use it exclusively.Excessive concentration of supplemental coolant additive can form deposits which may cause engine damage, reduce the engine's heat transfer characteristics and could also accelerate water pump seal wear.
The cooling system MUST contain supplemental coolant additives (conditioner or inhibitor) to control corrosion, cavitation and deposits. It is also necessary to prevent rust, scale, pitting and/or corrosion of engine parts contacted by coolant. The cooling system should be protected with a minimum of three percent concentration at all times, regardless of the concentration of antifreeze. Use supplemental coolant additive liquid OR an element (if equipped) to maintain a three to six percent concentration in the cooling system.Use the 8T5296 Test Kit to check and monitor the SCA concentration for antifreeze/water coolant mixture. The Caterpillar 8T5296 Test Kit checks for concentration of nitrates in the coolant solution. Some other manufacturers' supplemental coolant additive (SCA) are phosphate based and the 8T5296 Test Kit will NOT provide accurate results. Caterpillar recommends that their test kit be used to check coolant solution concentration.If other than Caterpillar products are used as the supplemental coolant additive, follow the manufacturers' recommendation for cooling system treatment and test evaluation. Commercial supplemental coolant additive products must contain silicates and a minimum of 70 gr/U.S. gallon (1200 ppm) nitrites.Caterpillar liquid supplemental coolant additive (Conditioner) is available through your Caterpillar dealer in quantities that follow. Pre-chargeCaterpillar Antifreeze DOES NOT require supplemental coolant additive added at initial fill, however additive is required on a maintenance basis. For engines equipped with supplemental coolant additive elements, the last MAINTENANCE element should not be replaced at FLUSH & FILL or Overhaul until the next oil change interval. Corrosion in raw (sea) water